[MTD] remove dead MTD_PMC551_APERTURE_SIZE option

The CONFIG_MTD_PMC551_APERTURE_SIZE option seems to never have existed,
so there's no reason for carrying an #ifdef for it.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c
index d1cf66e..7060a08 100644
--- a/drivers/mtd/devices/pmc551.c
+++ b/drivers/mtd/devices/pmc551.c
@@ -649,11 +649,7 @@
  * Stuff these outside the ifdef so as to not bust compiled in driver support
  */
 static int msize = 0;
-#if defined(CONFIG_MTD_PMC551_APERTURE_SIZE)
-static int asize = CONFIG_MTD_PMC551_APERTURE_SIZE;
-#else
 static int asize = 0;
-#endif
 
 module_param(msize, int, 0);
 MODULE_PARM_DESC(msize, "memory size in MiB [1 - 1024]");